Question 1

What does Proweblook WhatsApp Checker API do?

Accepted Answer

Proweblook WhatsApp Number Checker is a real-time verification API that confirms whether any given phone number is registered and active on WhatsApp, including whether the account is a personal WhatsApp account or a WhatsApp Business account. Built for developers and businesses that use WhatsApp as a primary communication channel, the API delivers 99.7% accuracy across 180+ countries including Nigeria.

In Nigeria — where WhatsApp is the dominant messaging platform with over 90 million users — the ability to verify WhatsApp registration status before sending messages is a critical optimization tool. Nigerian businesses sending broadcast campaigns or customer support messages via WhatsApp incur costs and face failed delivery when sending to numbers not registered on the platform. Proweblook's WhatsApp Checker solves this by enabling pre-send verification of individual numbers or bulk contact lists.

## What the API Does

The WhatsApp Number Checker API accepts a phone number (or a batch of numbers) and returns:
- **Is WhatsApp registered**: Boolean indicating whether the number has an active WhatsApp account.
- **Account type**: Whether the account is a personal WhatsApp user or a WhatsApp Business account.
- **Validity**: Basic phone number validation alongside the WhatsApp check.

For bulk processing, the API supports asynchronous batch jobs — submit a list of numbers and retrieve results when processing completes, making it efficient for checking thousands of numbers before a campaign launch.

## How Developers Use It

Integration via REST API with API key authentication. For single-number checks, a synchronous GET or POST request returns the result immediately. For bulk operations, an asynchronous job is submitted and results are fetched from a callback or polling endpoint. Full API documentation is available at proweblook.com.

## Pricing & Fees

Proweblook offers a free tier for initial development and testing. Paid plans are available for production and high-volume use. Current pricing tiers are listed at proweblook.com. Bulk processing is supported on paid plans.

## Authentication

API key authentication. Keys are obtained after registration at proweblook.com.

## Rate Limits

Single-number real-time checks and high-volume bulk batch processing are both supported. Contact Proweblook for specific throughput limits on your plan.

## Nigeria-Specific Context

Nigeria is one of WhatsApp's largest markets globally. Nigerian businesses — including fintechs, e-commerce platforms, logistics companies, and customer service teams — rely heavily on WhatsApp for:
- Customer onboarding and verification notifications
- Order confirmations and delivery tracking
- Customer support and complaint resolution
- Marketing broadcasts and promotional campaigns

Before any of these use cases, verifying that the target number is actually on WhatsApp dramatically improves delivery rates and reduces wasted API costs. Proweblook's WhatsApp Checker enables this verification at scale.

## Compliance & Terms of Service

WhatsApp's official Business API (via Meta) is the compliant channel for commercial WhatsApp messaging. Automated WhatsApp number checking via third-party APIs like Proweblook operates outside of WhatsApp's official API and may conflict with WhatsApp's Terms of Service for mass commercial use. Developers should review WhatsApp's ToS and consider whether their use case is within acceptable use before deploying at scale. For regulatory compliance in Nigerian financial services, use official communication channels (SMS, email, registered WhatsApp Business API) for sensitive notifications.

## Challenges & Gotchas for Nigerian Developers

1. **WhatsApp ToS considerations**: Automated number checking via third-party tools is in a gray area with WhatsApp's Terms of Service. Assess your use case carefully.
2. **Accuracy variability**: While 99.7% accuracy is reported, this may vary by country and carrier. Test accuracy specifically for Nigerian numbers before relying on it for production workflows.
3. **Pricing opacity**: Current plan pricing is not publicly listed — request a quote from Proweblook for volume-based pricing.
4. **Not a WhatsApp messaging API**: This API only checks registration status — it does not send messages. Pair with WhatsApp Business API (via Meta) or BSPs like Twilio or Bird for actual message delivery.

## Company Background

Proweblook is an API toolkit provider focused on communication and contact verification tools. The platform combines phone validation, WhatsApp number checking, Caller ID lookup, GeoIP, and 200+ AI tools in a single service accessible through a unified API key.

## Frequently Asked Questions

**Q: Does Proweblook support Nigerian (+234) WhatsApp number checking?**
A: Yes. Nigeria is included in the 180+ countries supported for WhatsApp number verification.

**Q: Can it detect WhatsApp Business accounts separately from personal accounts?**
A: Yes. The API distinguishes between personal WhatsApp users and WhatsApp Business accounts.

**Q: Can I check a bulk list of Nigerian numbers?**
A: Yes. Bulk batch processing is available via async jobs for high-volume list checking.

**Q: Does this API send WhatsApp messages?**
A: No. This API only checks registration status. Use Meta's WhatsApp Business API or an approved BSP for sending messages.

Question 2

How much does Proweblook WhatsApp Checker API cost?

Accepted Answer

Proweblook WhatsApp Checker API is free to start, with paid tiers for higher usage (freemium). Free tier available. Paid plans for higher volume — check proweblook.com for current pricing. Bulk processing supported.

Question 3

How do I authenticate with the Proweblook WhatsApp Checker API API?

Accepted Answer

API Key

Question 4

Is there a rate limit on Proweblook WhatsApp Checker API?

Accepted Answer

Real-time and async modes. Bulk batch processing supported.

Question 5

Does Proweblook WhatsApp Checker API offer a sandbox or test mode?

Accepted Answer

Yes — Proweblook WhatsApp Checker API provides a sandbox or test environment so you can integrate and test before going live.

Question 6

What is Proweblook WhatsApp Checker API best suited for?

Accepted Answer

Nigerian businesses and developers who need to verify whether phone numbers are registered on WhatsApp before sending messages, with support for personal and business account detection and bulk list checking.

Question 7

Is there anything else I should know before integrating Proweblook WhatsApp Checker API?

Accepted Answer

Proweblook WhatsApp Checker returns 99.7% accuracy for WhatsApp registration status across 180+ countries including Nigeria. Distinguish between personal and business WhatsApp accounts. Use this before WhatsApp broadcast campaigns to avoid failed deliveries.

Question 8

Where can I find Proweblook WhatsApp Checker API's documentation?

Accepted Answer

The official API documentation is at https://proweblook.com. The provider's website is https://proweblook.com/whatsapp-number-checker.

Question 9

Does Proweblook WhatsApp Checker API support Nigerian developers?

Accepted Answer

Yes — Proweblook WhatsApp Checker API explicitly supports Nigerian developers/use cases.

Proweblook WhatsApp Checker API

Features Included

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Key Highlights

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